mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-25 13:35:00 +00:00
92 lines
2.5 KiB
Go
92 lines
2.5 KiB
Go
/**
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# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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**/
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package info
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import (
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"github.com/NVIDIA/go-nvlib/pkg/nvlib/device"
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"github.com/NVIDIA/go-nvlib/pkg/nvlib/info"
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"github.com/NVIDIA/go-nvml/pkg/nvml"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/config/image"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/logger"
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)
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// infoInterface provides an alias for mocking.
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//
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//go:generate moq -stub -out info-interface_mock.go . infoInterface
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type infoInterface interface {
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info.Interface
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// UsesNVGPUModule indicates whether the system is using the nvgpu kernel module
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UsesNVGPUModule() (bool, string)
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}
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type resolver struct {
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logger logger.Interface
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info infoInterface
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}
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// ResolveAutoMode determines the correct mode for the platform if set to "auto"
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func ResolveAutoMode(logger logger.Interface, mode string, image image.CUDA) (rmode string) {
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nvinfo := info.New()
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nvmllib := nvml.New()
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devicelib := device.New(
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device.WithNvml(nvmllib),
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)
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info := additionalInfo{
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Interface: nvinfo,
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nvmllib: nvmllib,
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devicelib: devicelib,
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}
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r := resolver{
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logger: logger,
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info: info,
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}
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return r.resolveMode(mode, image)
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}
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// resolveMode determines the correct mode for the platform if set to "auto"
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func (r resolver) resolveMode(mode string, image image.CUDA) (rmode string) {
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if mode != "auto" {
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r.logger.Infof("Using requested mode '%s'", mode)
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return mode
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}
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defer func() {
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r.logger.Infof("Auto-detected mode as '%v'", rmode)
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}()
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if image.OnlyFullyQualifiedCDIDevices() {
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return "cdi"
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}
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isTegra, reason := r.info.IsTegraSystem()
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r.logger.Debugf("Is Tegra-based system? %v: %v", isTegra, reason)
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hasNVML, reason := r.info.HasNvml()
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r.logger.Debugf("Has NVML? %v: %v", hasNVML, reason)
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usesNVGPUModule, reason := r.info.UsesNVGPUModule()
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r.logger.Debugf("Uses nvgpu kernel module? %v: %v", usesNVGPUModule, reason)
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if (isTegra && !hasNVML) || usesNVGPUModule {
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return "csv"
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}
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return "legacy"
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}
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